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Slaughter results analysis of grass-fed beef cattle
2017
Muizniece, I., Latvia Univ. of Agriculture, Jelgava (Latvia) | Kairisa, D., Latvia Univ. of Agriculture, Jelgava (Latvia)
Cattle fattening, first of all, should be beneficial for a farmer, therefore, in Latvia more suitable are such average intense fattening methods as fattening with grass fodder. In the world, demand for beef, produced in an environmentally friendly manner, ensuring the appropriate animal welfare conditions, is growing. The aim of the study was to find out the fattening results of Hereford (HE) and Aberdinanguss (AB) pure-bred bulls and their crosses when fed with grass fodder. The study was conducted in 2015 and 2016 within the framework of the project ‘Baltic Grassland Beef’. AB crossbreed bulls were slaughtered when they were 519 ± 16.6 days old, but HE pure-bred bulls − 584 ± 7.3 days old (p ≤ 0.05). The biggest live weight and slaughter weight showed HE crossbreed group bulls – 557 ± 19.4 kg and 293 ± 12.2 kg, respectively, but the biggest live weight daily gain from birth to slaughter was observed to AB pure–bred group bulls – 952 ± 24.7. Carcass conformation score in muscle development was the highest for AB pure–bred group bulls. Their average conformation score was 3.2 ± 0.08 points. In terms of fat score development, carcass with the best quality was obtained from HE crossbreed group bulls, the resulting fat score – 2.4 ± 0.10. The obtained results prove that pure-bred and crossbreed bulls used in this research are suitable for fattening with grass in the conditions of Latvia
显示更多 [+] 显示较少 [-]Typologie des élevages sédentaires en zone semi-aride: cas du Cameroun
2016
Blama, Yakouba | Ziebe, R. | Rigolot, Cyrille | Institut Supérieur du Sahel (ISS) ; University of Maroua (UMa) | Mutations des activités des espaces et des formes d'organisation dans les territoires ruraux (UMR METAFORT) ; Institut National de la Recherche Agronomique (INRA)-AgroParisTech-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
The desire to reduce food insecurity and poverty in developing countries is the essential justification to take into consideration rural agro-pastoral activities. Thus this paper proposes a typological study of sedentary farmers in the semi-arid zone of Cameroon which was conducted between January and May 2014. 400 sedentary farmers were surveyed in four cities including Mindif, Doukoula, Koza and Maroua.Descriptive statistics helped to highlight that 100% of sedentary farmers practice agriculture. The fattening of ruminants is an activity that increasingly recruits sedentary farmers. This applies to Mindif where virtually all farmers practice sedentary fattening of ruminants. The factor analysis revealed two main components of variables characterizing the sedentaryfarmers. The extensive sedentary farming group is made up of 66% of producers in the area. The extensive sedentary farming group is made up of 66% of producers in the area. In the group of semi-intensive sedentary farmers, producers are increasingly farming a real business. This group could be a base for the development of animal production of second generation. | Pour réduire l’insécurité alimentaire et la pauvreté dans les pays en voie de développement une analyse des activités agropastorales en milieu rural est nécessaire. La typologie est à la base de cette analyse. Ainsi une étude typologique des élevages sédentaires en zone semi-aride du Cameroun a été menée entre janvier et mai 2014. Pour cela, 400 éleveurs sédentaires ont été enquêtés dans 4 communes dont celles de Mindif, Doukoula, Koza et la communauté de Maroua.Les statistiques descriptives ont montré que 100% des éleveurs sédentaires pratiquent l’agriculture. L’engraissement des ruminants est une activité qui recrute de plus en plus les éleveurs sédentaires. C’est le cas à Mindif où la quasi-totalité des éleveurs sédentaires pratique l’embouche des ruminants. L’analyse factorielle fait ressortir deux composantes principales des variables caractérisant les éleveurs étudiés. La classification two-step a été utilisée à et effet. Le groupe des élevages sédentaires extensifs englobe 66% des producteurs de la zone. Dans le groupe des élevages sédentaires semi-intensifs les producteurs font de plus en plus de l’élevage unvéritable business. Ce groupe pourrait constituer un socle pour le développement des productions animales de deuxième génération.
显示更多 [+] 显示较少 [-]Different beef breed cattle fattening results analysis
2016
Muizniece, I., Latvia Univ. of Agriculture, Jelgava (Latvia) | Kairisa, D., Latvia Univ. of Agriculture, Jelgava (Latvia)
In Latvia, different breeds of beef cattle are grown; therefore, it is important to explain their suitability to organic farming systems, because most Latvian beef cattle breeders work with organic farming methods. The aim of this research was to compare fattening of different beef breed bulls (Bos Taurus) in organic farming system at similar housing and feeding conditions. In the research, there were included Blonde d’Aquitaine (BA), Hereford (HE), Simmental (SI) and crossbred (CB) bulls. Fattening period started after calf weaning from suckler cows at 7 – 8 months of age. Fattening results were significantly affected by factors like breed, live weight and age before fattening, but slaughter results were significantly affected by breed, live weight and age before slaughter. During the fattening period the biggest daily weight gain was showed for SI breed bulls (849 g), but the biggest live weight increase was recognized for BA breed bulls (295 kg). The required slaughter weight the fastest was reached for XG bulls, which average slaughter age was 532 days (p is less than 0.05). The greatest slaughter weight – 342 kg (p is less than 0.05) and dressing percentage (58% (p is less than 0.05)) was recognized for BA breed bulls; also, carcass conformation score in muscle development was the highest for BA bulls (2.0 points (p is less than 0.05)). The greatest economic benefit was from CB bulls, income calculated per one rearing day from CB bulls was - EUR 1.80.
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