Positive effects of dietary supplementation of three probiotics on milk yield, milk composition and intestinal flora in Sannan dairy goats varied in kind of probiotics

Abstract

In this study, we investigated the effects of Saccharomyces cerevisiae (SC), Bacillus subtilis (BS) and Enterococcus faecalis (EF), singly and in combination, on the dry matter intake (DMI), milk production and composition, and faecal microflora of Saanen dairy goats. Fifty goats were randomly divided into five groups: (a) basal diet (control);(b) basal diet + SC; (c) basal diet + BS; (d) basal diet + EF; and (e) basal diet + mixed probiotics. Each treated animal received 5 g/d of probiotics for a total administration of 5 × 1,011 CFU/goat per day. The inclusion of B. subtilis and E. faecalis in the diet of lactating Saanen goats increased DMI (p < .05). Enhanced milk yield was observed with BS and EF. Milk fat percentage was significantly increased by feeding mixed probiotics compared with the control (p < .05); supplying SC, BS and mixed probiotics enhanced the protein percentage (p < .05). The milk lactose percentage in the SC and BS groups was higher than in the control (p < .05). The amount of milk total solids was higher after feeding EF or mixed probiotics than in the control group (p < .05). Non-fat solids showed no notable differences among groups (p > .05). There was no significant influence on gut bacterial abundance and diversity from adding these three probiotics, singly or in combination. Bacteroidales, Escherichia-Shigella and Christensenellaceae abundances were decreased by supplying these probiotics but Succinivibrionaceae increased. In conclusion, there were positive influences of probiotic feed supplementation on intake, milk performance and intestinal microecology. K E Y W O R D SBacillus subtilis, DMI, Enterococcus faecalis, intestinal microecology, Saccharomyces cerevisiae

Effects of Bacillus amyloliquefaciens and Bacillus pumilus on Rumen and Intestine Morphology and Microbiota in Weanling Jintang Black Goat

“…A good digestive tract microbiota benefits the host by regulation of the physiological procedure and mucosal immunity, from producing antimicrobial substances to suppressing the proliferation of digestive tract pathogens [23], leading to a highly efficient rumen function [24] and improving growth performance through improving the digestive tract microbial ecosystem [25]. In the present study, Firmicutes and Bacteroidetes were the two dominant phyla in the rumen and caecum, which is in agreement with previous studies [26,27]. Our research indicated that the Firmicutes abundance in the rumen and caecum increased after feeding weanling goats with Bacillus amyloliquefaciens fsznc-06 or Bacillus pumilus fsznc-09, but the Bacteroidetes abundance decreased in rumen and caecum, indicating that Bacillus amyloliquefaciens fsznc-06 and Bacillus pumilus fsznc-09 improved Firmicutes proliferation.…”

Use of encapsulated Bacillus subtilis and essential oils to improve antioxidant and immune status of blood and production and hatching performance of laying hens

“…And, Hern andez-Coronado et al (2019) also reported that EO at 400 mg/L can serve as natural alternative additives in drinking water to improve broiler production and meat quality. Besides, there have been a number of studies about the use of BS or EO on piglet (Tian and Piao 2019), aquaculture (Jiang et al 2019), beef (Alemu et al 2019), and goat (Ma et al 2020). Therefore, BS and EO are receiving increasing attention as potential antibiotic growth promotor alternatives and are already employed in many commercial applications.…”

Impact of yeast and lactic acid bacteria on mastitis and milk microbiota composition of dairy cows

“…Since high SCC and milk of inferior are the common indicator and consequence of mastitis for dairy cows, decreased SCC and improved milk quality in our study suggested the amelioration of mastitis. Higher milk percentage of fat and lactose caused by dietary supplementation of yeast has been reported in dairy goats (Ma et al 2019) and dairy cows (Olagaray et al 2019), while similar study with LAB are rare. Catozzi et al (2019) reported that intramammary incubation of inactivated Lactobacillus rhamnosus caused significant increase of SCC on cows with subclinical at the beginning but decreased afterwards, as well as modulation of milk microbiota.…”