The intrarumenal and intra-abomasal pH indices in goats of different ages in winter period | Ph rādītāji spureklī un glumeniekā dažāda vecuma kazām ziemas periodā
2008
Keidane, D., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Veterinary Medicine. Preclinical Inst. | Birgele, E., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Veterinary Medicine. Preclinical Inst.
The objective of this study was to determine intraruminal and intra abomasal pH changes in the relationship with animal age and nutrition. Twenty seven goats at the age between ten and fourteen month and eight yeanlings, aged between two and three month were used in this study. Chronical rumenal and abomasal fistules were operated in all animals. To determine intrarumenal and intra abomasal pH, potenciometrical intragastric pH-metry methods were using, two-electrode pH probe was installed in animals via ruminal and abomasal fistule. It was establish that: (1) the feeding of hay, fodder and carrots together in 10 – 14 months old goats causes a small increase in the rumen pH - 7.6 – 7.7 in the mornings before feeding, comparing with a pH 7.2 – 7.5 after hay and fodder or feeding with hay and carrots; (2) in adult goats the level of acids in abomasum before feeding in the morning was comparatively low - pH 4.2 – 4.6. The highest level of acids – the lowest pH – 3.1 – 3.2 was established in goats in the third and fourth feeding hour – after hay and fodder and after hay and carrot feeding. Also, in yeanlings after feeding, especially after the third hour the level of acids in abomasum was comparatively high pH 2.2 – 2.3; (3) in two–three months old yeanlings at 6:00 o’clock in the morning was a lower intraabomasal pH 3.2 – 3.4, i.e. higher acid level in the abomasum before feeding comparing to10-14 months old goats.
Показать больше [+] Меньше [-]