The use of metallic silver as an antimicrobial agent has been recognized for centuries. Silver nanoparticles (SNP) are now incorporated in apparel, wound dressings, appliances, cosmetics, paints and plastics for their antimicrobial properties. Generally, silver nanoparticles are prepared by a variety of chemical methods. In this study, we have used Phyllanthus amarus and Andrographis paniculata herbal plants leaves and stem extracts to synthesis SNP and were characterized by UV-Vis spectroscopy and Transmission Electron Microscopy (TEM). SNP capped with plant extracts gave absorption peak at 420 nm as expected for silver and broadening of peak were also noticed. TEM images suggested that they were of almost spherical shape and in the range of 7-60 nm in size. Antibacterial activity of plant extracts capped SNP were tested in Mueller-Hinton agar by well diffusion method against Staphylococcus aureus, Bacillus subtilis, Proteus vulgaris, Escherichia coli and Salmonella Typhimurium.  SNP of 1 mg/ml and 5 mg/ml of P.amarus exhibited almost similar antibacterial activity, whereas, 5mg/ml, not 1 mg/ml of SNP capped with A. paniculata exerted antibacterial activity. The highest zone of inhibition was noticed against B.subtilis followed by S.aureus and P.vulgaris and the least zone of inhibition was observed against E.coli and S.Typhimurium. Green synthesis of SNP is cost effective and environment friendly. Further studies are required to explore the possibility of use of P.amarus capped silver nanoparticles for the treatment of burn and wound.

Restraining gadget for Indian poisonous snakes like Indian cobra and Russell’s Viper were designed, using available infrastructures. Tongs, collapsible tubes and bags were designed and applied in the poisonous snakes in order to have better restraining activities. These snakes reared at Guindy Snake Park Trust were successfully restrained, using the gadgets developed. However these gadgets were found not suitable for restraining procedure associated with Saw scaled viper and Common krait. The gadgets developed were useful for zoo veterinarians for control of these serpentines.

A comparison of milk yield and composition of various indigenous and crossbred cattle was undertaken to evaluate their performance in the subtropical high altitudes of Kerala. A total of 173, 95, 63 and 63 morning milk samples from 42 CBHF, 12 Vechur, six Sahiwaland six Kankrej cows of early second lactation were analyzed for total solids, fat, solids-not-fat, lactose, protein and chloride by conventional  methods. Least squares analysis revealed that breed and test-day climate significantly influenced the milk yield and composition (P >0.05). The mean lactation yield in Vechur, Sahiwal, Kankrej and CBHF were 514.62 ± 42.87 Kg, 1025.65 ± 358.15 Kg, 1102.45 ± 358.15 Kg and 1763.93 ± 128.16 Kg respectively. Kankrej had higher fat and total solids while Vechur had higher SNF, protein and lactose (P >0.05). Vechur had lesser seasonal fluctuations in major constituents, indicating it’s adaptability and climatic resilience as the native breed of Kerala.

Gastrointestinal nematode parasitism is one of the major factors limiting sheep production worldwide because they cause heavy economic losses in meat and wool production. Gastrointestinal parasitism is the major cause for morbidity and mortality in ruminants. Severe anemia, reduction in functional gastric gland mass, severe damage to gastric mucosa and villous astropy caused by these worms are responsible for the death due to parasitic gastroenteritis. In India, the common nematode species encountered is Haemonchus contortus in small ruminants. This review throws light on the different mechanisms and contributory factors affecting the development of anthelmintic resistance, the diagnosis and means to prevent the resistance at field level. The emergence of multi-resistant nematode has shown that the previously used control strategies is no longer a chemically success method. The interpretation of fecal egg count reduction test has been modified and suggestions are made on its use with persistent anthelmintics. 

Methane (CH4) is second major gas after carbon dioxide (CO2) responsible for the warming of environment and ozone layer depletion. Although CH4 production is necessary for efficient digestion, it represents an energetic loss of up to 12% of the gross energy intake in ruminants. Methane is produced by strict anaerobes belonging to the sub-group of the Archaea domain. The past decade has shown a lot of interest in the use of plant extracts to mitigate methane production in ruminants. Addition of plant essential oils, can limit the growth of the micro-organisms participating in methane formation in the rumen, thus resulting in the reduction of its production. Reduction of methane production in the rumen ecosystem is possible to achieve with the use of plantsaponins. Tannins have been found to be toxic for many of the rumen microbes, especially ciliate protozoa, fibre degrading microbes and methanogenic bacteria as a result of this methanogenesis in the rumen is reduced. 

Animal body reacts to all kinds of injuries and stress to keep the homeostasis. Such resistance can be specific or non specific. Non specific innate resistance of the body like cytological and cytokine reactions including fever, leukocytoses etc. are known as acute phase response. In this response, there will be increase or decrease of serum concentration of particular proteins. These proteins are known as acute phase proteins. Measurement of serum concentration of these acute phase proteins are found to be useful in assessment of health status and prediction of diseases of the man and animals. Acute phase proteins like Serum amyloid A, C- reactive proteins, Haptoglobin, alpha 1 acid glycoprotein etc. are found to be more sensitive and specific than the routine diagnostic methods like white blood cell count. Use of acute phase proteins as biomarkers for animal disease diagnosis and health status assessment has got high potential in modern veterinary practice. Usefulness of the acute phase protein analysis in veterinary practice especially in dog, cat, cattle and pig practices is discussed in this review.

A detailed study was undertaken to assess the length - weight relationship of Lethrinus lentjan and Lethrinus nebulosus in Thoothukudi coast. The ‘b’ value of L.lentjan (3.027) and L.nebulosus(2.964) were analysed against ‘3’ with 248 degrees of freedom and the ‘b’ values of both the species of L.lentjan and  L.nebulosus were not significant at 5% and 1% level.

The brown paper nautilus, Argonauta hians Lightfoot, 1786 was recorded for the first time from Indian waters while investigating the biodiversity of the molluscs of Gulf of Mannar during June, 2011. One specimen of the said species was collected as an incidental by-catch in the trawl catch off Thoothukudi coast of Gulf of Mannar, from India, between 08º 35’ 22.5" N 78º 27’ 40.9" E and 08º 31’ 91.2"N 78º 25’ 32.7"E at a depth of 305-310 m.  

High mortality in a period of one month due to hepatic coccidiosis was reported in a rabbit farm. Typical nodular lesions in liver and unsporulated oocysts of E. stiedai could be detected. Animals were treated with sulphaquinoxyline and diaveridine for five days followed by repetition of treatment after five days. Strict sanitary measures and disinfection of cages by spraying with 10 per cent ammonia solution was adopted. All animals with poor body conditions were removed from the flock and the disease was controlled.

Abnormalities in size and growth has been observed in the young ones of angel fish (Pterophyllum scalare) of the same brood. Morphological measurements confirm the abnormalities in the affected specimens. As per the reports available, methylene blue treatment during the early life stages may have a teratogenic effect which led to such conditions in angel fish.