Dietary supplement of the rumen protected methionine and milk yield in dairy goats

Abstract

Abstract. The experiment was conducted on three farms of dairy goats. The experimental groups of animals were during the four months period supplemented with 5g Mepron®, (Degussa, Germany), daily. Milk yield, milk protein and milk fat content were recorded throughout the experiment. The milk production was statistically higher in the experimental group of animals on two farms, farm 1 and farm 3 in the first control period, a month after the application, whereas on farm 2, the higher milk production was present in the third and forth control period, two and three months after the application. During the experiment there was no statistically differences in milk protein and milk fat content between experimental and control groups on farm 1 and farm 2, whereas on farm 3 the milk fat content was statistically lower during the Mepron® supplementation. In conclusion, the higher milk production in the first control period on farm 1 and 3 with great probability referred to the influence of Mepron®. The higher milk production on farm 2 in the third and fourth control period coincided with introduction of alfalfa hay in daily ration, that may have enriched the amino acid supply.

Effect of Supplemented Rumen Protected Methionine and/or Choline on Performance of Zaraibi Goats: 1. Productive Performance of Lactating Goats

“…Milk yield increased by 19.36, 12.62 and 31.31% for RPM, RPC and RPM+RPC groups, respectively. These results agreed with those obtained by Poljicak-Milas and Marenjak (2007), who reported that the milk production was significantly higher for goats, fed RPM than those fed control diet. Flores et al (2009) found quadratic (P<0.05) increase in milk yield and milk fat and protein of goats as dietary RPM increased.…”

Effect of rumen-protected methionine on production and composition of early lactating Shami goats milk and growth performance of their kids

“…Lacking effect on milk fat percentage following RPM supplementation was reported earlier with dairy goats (Poljičak Milas & Marenjak 2007) and with dairy cows (Lara et al 2006, Třinácty et al 2006, Yang et al 2010, Soltan et al 2012. However, both (fat content and yield) were negatively affected by supplementation of RPM to early lactating dairy goats (Madsen et al 2005).…”

“…Growing trend in consumption of goat milk and its products has initiated the modern dairy industry to improve goat milk production and change the milk composition by dietary means (Poljičak Milas & Marenjak 2007). Goat milk has been identified as an alternative for infants and adults who are either sensitive or allergic to cow milk.…”

“…The immense amounts of research have been done on the dairy cows with the primary goal to study the effect of supplementing rumen protected methionine on milk production and its composition (Poljičak Milas & Marenjak 2007). Meanwhile, information in literature on dairy goats fed with rumen-protected amino acids is scarce (Flores et al 2009).…”

Oxidative stability and quality of raw Saanen and Alpine goats milk

“…The milk fat content was rather low in both breeds of dairy goats in the study, and lower than the average milk fat content in the Annual Report (CROATIAN AGRICULTURAL AGENCY 2006) and the result of KOZAČINSKI et al (2004) andSTRZALKOWSKA et al (2007) (Table 1). Among other milk components, there is some evidence of higher deviation in milk fat content during the lactation cycle, especially due to dietary changes (PLOUMI et al 1998, POLJIČAK-MILAS and MARENJAK 2007, SANZ SAMPELAYO et al 2007. In dairy goats, as well as in other ruminants, low milk fat syndrome might occur mostly as an effect of changes in rumen biohydrogenation processes.…”