&lt;b&gt;The impact of dietary dry yeast on lactation curves of primiparous and multiparous Saanen goats

Gomes, Ludmila Coutob; Alcalde, Claudete Regina; Souza, Rodrigo de; Molina, Bruna Susan de Lábio; Lourenço, Daniela Andressa de Lino; Martins, Elias Nunes

doi:10.4025/actascianimsci.v36i4.24446

Cited by 6 publications

(6 citation statements)

References 10 publications

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“…It is noteworthy that the nutritional requirements in this study were according to AFRC (1993) for Saanen goats with body weights of 60 kg and a milk yield of 3.0 kg per day, and that the data obtained in this study was thus similar to that predicted by this nutrition council. The milk yield at the beginning of lactation (2.16 kg/day) and at the peak (3.86 kg/day) was lower than reports of other studies for Saanen goats under tropical climate conditions, as mentioned by Gomes et al (2014) and Souza et al (2014), and close to that reported by Macedo et al (2001) and Zambom et al (2005). These differences must be due to the variations in the ingredients and compositions of diets.…”

Section: Discussioncontrasting

confidence: 51%

“…By evaluating the lactation curves of Saanen goats through Wood's nonlinear model, Takma et al (2009) showed that the increased rate of yield until lactation peak was 0.13 and Gomes et al (2014) showed a range from 0.03 to 0.13. Nevertheless, in this research, the rate of yield increased from 0.18 to 0.24, which agrees with Zambom et al (2005), who found values ranging from 0.10 to 0.27, and Tufarelli et al (2009), whose values ranged from 0.21 to 0.29 for the increased rate of yield until lactation peak.…”

Section: Discussionmentioning

confidence: 99%

“…Bayesian methodology has been successfully used in studies about lactation curves (Chang et al, 2001;Silva et al, 2005;Gomes et al, 2014), since it considers all parameters as random variables, which substantially reduces the number of atypical curves.…”

Section: Introductionmentioning

confidence: 99%

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Effect of soybean hulls on lactation curves and the composition of goat milk

et al. 2017

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-This study aimed to evaluate the effects of soybean hulls (SBH) as a ground corn replacement (0, 50, and 100% SBH) on the parameters of the lactation curve and on lactation curves and milk composition. Fourteen multiparous Saanen goats were used during their lactation period, from kidding until the drying of their milk on the 228th day of lactation, and were distributed in a completely randomised design. The data was analysed using Bayesian methodology to minimise the effect of the low number of animals and to allow for comparison of the curve parameters estimated by Wood's nonlinear model. The SBH had no effect on the initial milk yield; nevertheless, the SBH reduced the rate of yield until lactation peak and accelerated the declining rate of yield after lactation. The treatments did not affect dry matter intake. The inclusion of SBH increased the fat content in the milk, which was also influenced by the lactation stage of the goats. Effects were observed on polyunsaturated fatty acids (PUFA), PUFA/total AG ratio, and the n-6:n-3 ratio of goat milk fat. The lactation stage changed the content of saturated fatty acid, monounsaturated fatty acid, and C18:2 (conjugated linoleic acid). The SBH can therefore be used as a ground corn replacement in the diets of lactating goats, as changes in the lactation curve parameters did not result in changes in total yields. Nevertheless, if the milk fat increases, then as quality rises, so could payment by quality, and thus an increase in profit margins per liter of milk sold.

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Section: Discussioncontrasting

confidence: 51%

Section: Discussionmentioning

confidence: 99%

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Effect of soybean hulls on lactation curves and the composition of goat milk

et al. 2017

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“…In fact, in the last three weeks before calving a compression of the rumen by the fetus occurs and dry matter intake can be reduced by about 5 to 10% (RIBEIRO, 1997). Also, in early lactation, intake capacity is still critical, until the 7 th to 11 th week, when dry matter intake is completely restored (GOMES et al, 2014b).…”

Section: Resultsmentioning

confidence: 99%

Nutritive Value of Diets With Inactive Dry Yeast for Saanen Goats in the Peripartum Period

et al. 2016

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-The aim was to evaluate the replacement of soybean meal by inactive dry yeast (Saccharomyces cerevisiae) from sugar cane on nutritive value of diets for Saanen goats in the peripartum. Twenty-four Saanen goats (nine primiparous, 55.35 ± 4.55 kg and fifteen multiparous, 73.12 ± 8.51 kg) in prepartum and postpartum periods were distributed in a completely randomized design with a 3 × 2 (diet × parturition order) factorial arrangement. Diets were composed of soybean meal, soybean meal plus dry yeast or dry yeast as protein source, and other ingredients: ground corn, mineral supplement and limestone. The roughage source used was the whole plant corn silage (40% of the total diet). Diets were evaluated as dry matter intake and digestibility of nutrients. The diet with total dry yeast inclusion promoted a reduction on the ether extract intake (postpartum) and ether extract digestibility (prepartum and postpartum), due its lower ether extract content when compared to the other diets. Multiparous goats presented higher intakes for dry matter, nutrients and total digestible nutrients in both evaluated periods due their higher intake capacity. Primiparous goats in postpartum had better coefficients of digestibility for dry matter, organic matter, crude protein and total carbohydrates, and so a higher energetic value, attributed to total digestible nutrients compared to multiparous ones. Dry yeast can replace soybean meal with no changes on nutritive value of diets for Saanen goats.Keywords: Digestion. Intake. Protein source. Saccharomyces cerevisiae. VALOR NUTRITIVO DE DIETAS COM LEVEDURA SECA INATIVA PARA CABRAS SAANEN NO PERIPARTORESUMO -O objetivo foi avaliar a substituição do farelo de soja por levedura seca inativa (Saccharomyces cerevisiae) de cana-de-açúcar sobre o valor nutritivo de dietas para cabras Saanen no periparto. Vinte e quatro cabras Saanen (nove primíparas, 55,35 ± 4,55 kg e quinze multíparas, 73,12 ± 8,51 kg) durante os períodos pré-parto e pós-parto, foram distribuídas em delineamento inteiramente casualizado, com arranjo fatorial 3 × 2 (dieta × ordem de parto). As dietas foram compostas por farelo de soja, farelo de soja e levedura seca ou levedura seca como fonte de proteína e os demais ingredientes: milho moído, suplemento mineral e calcário. A fonte de volumoso utilizada foi a silagem de milho de planta inteira (40% da ração total). As dietas foram avaliadas quanto a ingestão de matéria seca e digestibilidade dos nutrientes. A dieta com inclusão total de levedura seca promoveu redução na ingestão de extrato etéreo (pós-parto) e na digestibilidade de extrato etéreo (pós-parto e pré-parto), devido ao seu menor teor de extrato etéreo quando comparada as demais dietas. As cabras multíparas apresentaram maiores ingestões de matéria seca, nutrientes e nutrientes digestíveis totais, em ambos os períodos avaliados, devido a sua maior capacidade de ingestão. As cabras primíparas em pós-parto apresentaram melhores coeficientes de digestibilidade para matéria seca, matéria orgânica, proteína bruta ...

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“…The Bayesian analysis is an approach that works on datasets with true distribution, being reliable for small groups of data (Alves et al 2011). It has been used to obtain precise estimates without needing any kind of transformation (Gomes et al 2014). The statistical method revealed the absence of a statistically significant difference between the germination speed of controls and treatments.…”

Section: Contentsmentioning

confidence: 99%

Toxicity of β-(1→3,1→6)-ᴅ-glucans produced by Diaporthe sp. endophytes on Metarhizium anisopliae (Metschnikoff) Sorokin assessed by conidia germination speed parameter

Orlandelli¹,

Almeida²,

Lourenço³

et al. 2020

Biosci. J.

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Previously, our study reported that β-(1→3,1→6)-ᴅ-glucans produced by endophytes Diaporthe sp. G27-60 and G65-65 (GenBank accession codes JF766998 and JF767007, respectively) are promising antiproliferative agents against human breast carcinoma (MCF-7) and hepatocellular carcinoma (HepG2-C3A) cells. However, effects of Diaporthe exopolysaccharides on eukaryotic healthy cells are not described in current literature. The fungus Metarhizium anisopliae has been employed as teste-system to evaluate the toxicity of pharmaceutical and agricultural-interest substances, considering, among other parameters, conidia germination speed. The current study aimed to verify the effect of different concentrations of Diaporthe β-glucans on the germination speed of M. anisopliae. Conidia were incubated with β-glucans treatments (50, 200 and 400 μg/mL) at 28 ºC, sampled throughout 24 h and analyzed by light microscopy. At the end of 24 h of incubation, the amount of germinated conidia was ≈99% for controls and ranged from 97.7 to 98.6% for treatments. Bayesian analysis indicated that Diaporthe glucans had no toxicity on M. anisopliae and the curve of germination occurred as expected for this fungal strain. Considering the validity of filamentous fungi as model systems, these results are important data about the toxicity of these endophytic EPS on healthy cells and may be associated with previous results obtained for these polymers against tumor cells. Keywords: bayesian analysis, conidia germination, endophytic fungi, exopolysaccharide, fungal model-system.

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<b>The impact of dietary dry yeast on lactation curves of primiparous and multiparous Saanen goats

Cited by 6 publications

References 10 publications

Effect of soybean hulls on lactation curves and the composition of goat milk

Effect of soybean hulls on lactation curves and the composition of goat milk

Nutritive Value of Diets With Inactive Dry Yeast for Saanen Goats in the Peripartum Period

Toxicity of β-(1→3,1→6)-ᴅ-glucans produced by Diaporthe sp. endophytes on Metarhizium anisopliae (Metschnikoff) Sorokin assessed by conidia germination speed parameter

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