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- Title
Effect of Supplementation of Rumen-Protected Methionine and Lysine on Digestibility and Rumen Fermentation in Female Crossbred Calves.
- Authors
Metiya, Ashish K.; Vahora, Safi G.; Lunagariya, Pravin M.; Shekh, Makbul A.; Chauhan, Ujjaval K.
- Abstract
The study was performed on 12 crossbred (Kankrej x HF) female calves to evaluate the effect of supplementation of rumen-protected methionine (RPM) and lysine (RPL) on the digestibility of nutrients and rumen fermentation. The calves were randomly allotted to two equal groups T1 and T2 based on their body weight for 98 days. Calves in the T1 group were fed basal TMR to meet the nutrient requirement as per ICAR (2013) standard and those in T2 were fed basal T1 TMR + 2 g RPM and 6 g RPL /kg DM. The digestion trial of 7 days was conducted during the 11th week of the experiment to assess the digestibility of nutrients. The rumen liquor samples were collected at 0, 2, 4, and 6 h post-feeding during the last month of the experiment to study the rumen fermentation pattern. The digestibility of nutrients was not influenced by T2 while the fecal nitrogen excretion as a percent of nitrogen intake (N efficiency) was significantly (p<0.05) lower as compared to T1. The rumen liquor soluble and total nitrogen contents were improved in T2 TMR supplemented with RPM and RPL. However, rumen liquor pH, total volatile fatty acids, ammonia nitrogen, and non-protein nitrogen did not show any significant difference between the treatment groups. The supplementation of RPM and RPL in the diet of crossbred female calves resulted in improved rumen soluble and total nitrogen content and nitrogen use efficiency, thus preventing the detrimental effect of ammonia and greenhouse gases on the environment.
- Subjects
RUMEN fermentation; CALVES; LYSINE; NITROGEN excretion; METHIONINE; GINGER
- Publication
Indian Journal of Veterinary Sciences & Biotechnology, 2024, Vol 20, Issue 3, p36
- ISSN
2394-0247
- Publication type
Article